Identify the element that does NOT belong to Period 6 of the Modern Periodic Table.
Show answer & explanation
Correct answer: A
Explanation
The correct answer is option 1 i.e. Silicon.
Silicon (Si) does not belong to Period 6 of the Modern Periodic Table.
Explanation:
Period 6 in the periodic table comprises elements with atomic numbers ranging from 55 (Cesium, Cs) to 86 (Radon, Rn), including the lanthanide series. Silicon (Si), with an atomic number of 14, is situated in Period 3, not Period 6. It is a non-metal and a semiconductor that belongs to Group 14 (Carbon Group).
These elements have much higher atomic numbers compared to silicon and belong to a different period in the periodic table.